西北蔷薇 xi bei qiang wei

Shrubs 1.5–4 m tall. Branchlets spreading, terete, slender, glabrous; prickles sparse to scattered, triangular, straight or slightly curved, flat, gradually tapering to broad base. Leaves including petiole 7–14 cm; stipules mostly adnate to petiole, free parts ovate, margin glandular, apex apiculate; rachis and petiole puberulous, glandular-pubescent, sparsely shortly prickly; leaflets 7–9, rarely 11 or 5, 2.5–7 × 1–2(–3) cm, abaxially densely puberulous or sparsely pubescent, rarely glabrous, adaxially usually glabrous, base subrounded or broadly cuneate, margin acutely simply serrate, apex acute. Flowers 3 to numerous in corymb, 2–3 cm in diam.; pedicel 1.5–2.5 cm, pubescent and stipitate glandular, glands to 3 mm; bracts large, ovate or lanceolate, both surfaces puberulous, margin entire, apex acuminate. Hypanthium elliptic or long ovoid, densely stipitate glandular. Sepals 5, ovate, leaflike, both surfaces puberulous, abaxially glandular-pubescent, margin entire. Petals 5, deep pink, broadly obovate, base broadly cuneate, apex emarginate. Styles free, slightly exserted, shorter than or nearly equaling stamens, densely pubescent. Hip deep red or orange-red, long ellipsoid or long obovoid, 1–1.5 × 1.8–2.5 cm, with a long neck at apex, glandular-pubescent or not, with persistent, erect sepals. Fl. Jun–Jul, fr. Sep.

Forest margins, scrub; 1500--3000 m. Gansu, Ningxia, Shaanxi, Sichuan, Yunnan.

Lower Taxa

• Rosa davidii var. davidii
• Rosa davidii var. elongata Rehder & E. H. Wilson